Safety drawbar head



Patented Aug. 24, 1926.

UNITED STATES vPATENT orrice.

ELMER G. FRAME, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 THE BALDWIN LOCOMO'IIVE WORKS, 0F PHILADELEHIA, PENNSYLVANIA., AA CORPORATION OF PENNSYLVANIA.

SAFETY DRAWBAR HEAD.

Application led January 20, 1923. Serial No. 613,924.

My invention relates to Vcertain improvements in the draw bars that connect a locomotive with a tender.

The object of my invention is to locate a safety bar in the same pockets as the main draw bar so as to increase the clearance between the heads containing the pockets and the tracks and the 'mechanism carried by the rear truck of the locomotive.

The invention also relates to the particular construction of the pins for coupling the bars to the heads.

In the accompanying drawings:

Fig. 1 is a longitudinal sectional view through the draw bars and heads of a locomotive;

Fig. 2 is a plan view.

Referringto the drawings, 1 is the frame of a locomotive. 2 is theframe of a tender. 3 is the draw head secured to the frame of the locomotive, or forming part of it. 4 is the draw head of the tender. 5 and 6 are abutment members forming sliding bumpers. One bumper is located on the locomotive and the other bumper is located on the tender. These abutment members may be of any of the ordinaryT constructions.

In the draw head 3 is a pocket 7 and in the draw head 4 is a pocket 8. These pockets are directly opposite each other and are of suiiicient height to receive the ends.

of the draw bar 9 and the safety bar 10. In each end of the dra-w bar 9 are openings 11 through which the pins 12 extend. The lower portion of each pin 12 rests in a bushing 13 mounted in the lower portion of the draw head. The draw bar 9 rests on the ends of the bushing, as shown in Fig. 1. nlach bushing has a flange 14 at its lower end, which fits a recess in the draw head; a reduced portion 15 of the pin extends through an .opening in the bottom of the bushing and is held therein by a key 16. Transverse bolts 17 on the draw heads hold the bushings in place.

In the upper end of each pin 12 is a slot for a double headed key 18. lVhen the keys are in place, the pin and the bushings are held together in the draw head. The safety bar 1() is directly under the draw bar 9. The draw bar is clear of the safety bar as it rests upon the end of the bushings 13.v

In each `end of the safety har 10 are elonbushings when the draw bar is under ten- Y sion, the draw har taking all of the strains.

If the draw bar should break, then thel strains are taken immediately by the safety bar.

By the above construction, the depth of each draw bar is materially reduced so that there is sufficient clearance between the draw heads and the truck, and the mechanism on the rear truck of the locomotive.

I claim:

1. The combination of two draw heads comprising castings, each of which defines a pocket; pins extending vertically through the pockets; a detachable bushing surrounding the lower portion of each pin; means for holding the pins and bushings in place; a draw bar and a safety bar. said safety bar being located directly under the draw bar and in close proximity thereto,4 each bar having an opening at each end, the openings in the safety bar being larger than those in the draw bar, the bushings extending through the openings in the safety bar and the pin ext-ending through the openings in the draw bar.

2. The combination of two draw heads comprising castings, each of which defines a single pocket; a detachable bushing mounted in each casting and extending part way through the pockets; a pin carried by each bushing and extending through the pockets; a safety bar having an enlarged opening at each end for the bushing; and adraw bar having openings at each end for the pins,

said draw bar resting on the ends of the 1lbushings in close proximity to the safety 3. The combination of a draw head having a single pocket; a detachable bushing in the lower portion of the dra-w head extending into the pocket: means for supporting the bushing; a pin having its lowerend mounted in the bushing and its upper end mounted in the draw head. said pin having a reduced portion extending through the bottom of the bushing; keys securing the pin in position; a draw bar extending into the pocketl ofthe draw head and having an.

opening for the pin, said bar resting on the ing and draw-bar pin respectively positioned end of the bushing; and a safety barphavin said apertures; and a pair of draw bars ing an enlarged opening through Which the respectively coupled to said pin and said 10 bushing extends, the said safety bar being bushing, said bars respectively resting on 5 located directly under the draw bar. A* y said bushing and the Wall of said draw head.

n* 4. Afdraiv-head Casting defining a, pocket provided With a pair of apertures; a bushv ELMER G. FRAME. 

